//显示高于隐式
var obj = {
    name:"obj",
    foo: function(){
        console.log(this);
        
    }
}

obj.foo()
obj.foo.call("abc")//abc

//bind
var bar = obj.foo.bind("cba")
bar()


//更明显的比较
function foo(params) {
    console.log(this);
    
}

var obj = {
    name:"obj",
    foo:foo.bind("aaa")
}

obj.foo()
